Scale trap



July 19, 1938;

F. E. CHERNOSKY SCALE TRAP Filed Oct. 3, 1936 2 Sheets-Sheet 2 Patented July 19, 1938 1 1 SCALE TRAP Frank Earl Chernosky, Corpus Christi, Tex. Application October 3, 1936, Serial No. 103,948

eoi 'ims. (01. 210-152) This invention relates toa separator orscale trap designed for use in fluid conducting lines, particularly hot water conducting lines, the primaryobject of the invention being to provide means for removing foreign matter such-as rust, lime, scale, or the like from the fluid conducting lines, prior to the passage of the fluid into-the manifolds, screens, motor pumps and other mechanisms through which the liquid must flow.

An important object of the invention is to provide a device of this character in-s'ucha manner that the device may be readily and easily cleaned and all foreign matter removed without the necessity of cutting "oif "the flow of fluid through the conducting lines.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides inthe combination and ar- =rangement of parts and in the details'oif'com struction hereinafter described and claimed, it being understood'that changes'in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Figure 1 is an elevational view of a lime scale trap, constructed in accordance with the invention.

Figure 2 is a longitudinal sectional view through the body portion of the device.

Figure 3 is a sectional View taken on line 33 of Figure 2.

Figure 4 is a vertical sectional View through the device.

Figure 5 is an end elevational View of the body portion.

Figure 6 is a View illustrating the blade operating means.

Referring to the drawings in detail, the reference character 5 designates the body portion of the trap which is shown as circular in cross section. As shown, the body portion comprises sections 6 and 1, which are formed with flanges 8 that have openings to accommodate bolts 9, whereby the sections of the body portion may be securely bolted together.

These flanges 8 also provide, means whereby the screen Ill may be secured. within the body portion, the screen being of a width to extend between the flanges, where it is bolted in position, by the bolts 9. Spacers II are also positioned between the flanges 8 and space the elongated guide plates I2, from the screen l0, prowhich may be readily connected in a fluid conducting line,

viding lateral longitudinal guide-ways, for the scraping blades l3 Which are arranged inpredetermined spaced relation with each other, and

connected at points intermediate their ends, by means of the operating bar I4. It might be fur ther stated that these scraping blades are so con-, structed that they 'closely'engage the lower sur face of the screen ID, to scrape materiaitherefrom; v I .Secured to the operating bar 14, andextendin'g downwardly therefrom is a finger I5 which extends through an opening in one end of the rod it that extends through" one end of the body portion 5, the rod being threaded to accommodate the double ratchet operating member ll sup ported by the bracket l8. From the foregoing it will be seen that by operating the double ratchetmember l1, theoperating bar and scraping blades may be moved longitudinally of the screen,- scraping scale and foreign matter therefrom. I I i The reference character lB designates an inlet opening to the body portion, which opening is in communication with the main pipe line 20, through the pipe 2|, there being provided a valve 22 for controlling the passage of fluid into the body portion. The outlet opening is arranged at the opposite end of the body portion and. is formed in the upper section of the body portion,

. the outlet opening being indicated by the reference character 23. A pipe indicated by the reference character 24 extends into the outlet opening, and connects with the pipe 20' which estab lishes communication between the body portion 5 and pipe line 20, in which the trap is used. A valve 32 controls the passage of fluid through pipe 24.

Valve 33 controls the passage of fluid through the pipe 20. At one end of the body portion, is an outlet opening 26 which is controlled by the valve 21, and. through which the scale and material removed from the screen may be flushed from the body portion.

Should it become necessary to supply acid during the scale removing process, acid may be supplied to the body portion,-through the opening and pipe 28, there being provided a valve 29 to control the passage of acid into the body portion. An outlet opening 30 is provided near the opposite end of the body portion to permit the acid to be forced from the body portion. A valve 3| controls the passage of fluid through this opening.

In the construction of the body portion 5, the body portion is not less than three times the capacity of the permanent conducting line.

j First the permanent capacity flow must be above I the screen, and second, double capacity must be below the screen in order to provide room for permanent flow and at the same time provide sufficient room for the collection of foreign matter. As clearly shown by Figure 4 of the drawings, the body portion is so constructed that the greatest area is below the screen in.

When the device has been positioned in a pipe line, the valve 25 is closed, whereupon the flow of fluid is through the lower section of the body portion, upwardly through the screen, from Where the fluid passes into the pipe line through the pipe 24.

Should it be desired to remove scale and foreign matter from the screen the valve 22 is opened slightly, and the valve 21 is opened to allow the flow of fluid directly through the lower compartment or section 1. It will of course be under- Having thus described the invention, what is claimed is:

1. A trap for removing scale from fluid conducting lines, comprising a horizontal body portion positioned in the fluid line, a perforated plate dividing the body portion into upper and lower compartments, guideways disposed longitudinally of the body portion at opposite side edges of the perforated plate, ascraper including a bar extending throughout substantially the entire length of the plate, scraping blades secured to the bar and disposed transversely thereof in spaced relation with each other, the ends of the scraping blades being disposed in the guideways, said blades closely engaging the lower surface of the perforated plate, and means for moving the scraping blades longitudinally of the plate, removing material from the plate.

2. A trap for removing scale from fluid conducting lines, comprising a body portion positioned in the fluid line, a perforated plate extending through the body portion and through which the liquid flows, a bar extending throughout substantially the entire length of the plate and disposed intermediate the side edges of the plate, scraping blades secured to the bar and disposed in spaced relation with each other, throughout the length of the bar, means for holding the scraping blades into close engagement with the lower surface of the perforated plate, and means for moving the scraping blades longitudinally of the perforated plate, whereby foreign matter is removed from the plate.

3. A trap for removing foreign matter from fluid conducting lines, comprising a body portion, a perforated screening plate dividing the body portion into compartments, elongated guideplates secured within the body portion and disposed in spaced relation with the screening plate, scraping blades, an operating bar extending into the body portion and to which the scraping blades are secured, the ends of the blades being held between the elongated guide-plates and screening plate, whereby the blades are held intoclose engagement with the lower surface of the screening plate, a rod having a threaded portion connected with the operating bar, and means operating over the threaded portion of the rod for moving the operating bar whereby the blades are moved over the surface of the screening plate.

FRANK EARL C I-IERNOSKY. 

